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Evo GeneralDiscuss any generalized technical Evo related topics that may not fit into the other forums.
Please do not post tech and rumor threads here.
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they are the older gsc cams.. they used to just call them 272's.. they had 264's.. 264/272.. 280s.. etc.. now they are different grinds and called s1s, s2s, and s3s.
I had the tune 2 weeks before I even installed the cams lol. I just have to still do my 3rd gear pulls and it will be "mellon tuned" to perfection as usual.
the ramp rates for the S1's and S2's are way more aggresive than any of the older 264,272,280 ginds. so no, you can't compare the S2's to the old 272 grinds even though they have the same duration and lift.